doing together and what he's doing on his own, we're doing resistance exercising, because at 85, there is muscle mass. one of the things fred does is knowing where your body is in space and time when you age. fred, show them your squat, please. fred does these great. he's going to position his feet underneath his knees, and he's going to stand up, but not pushing against the chair. believe it or not, he's going to slowly sit back. >> this might be easy for anybody to do. >> tap it. he keeps going with it. this exercise is incredibly difficult. but for most folks at this age, they will turn around and have to look where they are sitting. fred knows where his body is in space and time. >> the idea is, if you need to go down, you need a place to go down to. >> exactly right. >> so make sure the chair is anchored. >> he does it against the wall. ok, fred, have a seat.